Book recommendation for Putnam/Olympiads I have been concentrating on olympiad questions, and **PUTNAM exams,** Putnam is my **main focus.** Can you suggest a book from one of these: 1. Problem Solving Strategies By Arthur Engel 2. Putnam and Beyond by Andreescu Titu et. al **First,** can you tell me which one is better from the above? I only have one choice? **Any other book recommendations is greatly appreciated!**

How could you do better than the problems and solutions themselves for past Putnam exams?

1. 1938-1964
2. 1965-1984
3. 1985-2000



For a Putnam archive of past exam questions and solutions, check out this website maintained by Kiran Kedlaya.

There are, of course, many other resources, but these are by far the best I know to date.